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We consider the 1+1 dimensional N = (2,2) supersymmetric matrix model whichis obtained by dimensionally reducing N = 1 super Yang-Mills from four to twodimensions. The gauge groups we consider are U(Nc) and SU(Nc), where Nc isfinite but arbitrary. We adopt light-cone coordinates, and choose to work inthe light-cone gauge. Quantizing this theory via Discretized Light-ConeQuantization (DLCQ) introduces an integer, K, which restricts the light-conemomentum-fraction of constituent quanta to be integer multiples of 1/K.Solutions to the DLCQ bound state equations are obtained for K=2,3,...,6 bydiscretizing the light-cone supercharges, which results in a supersymmetricspectrum. Our numerical results imply the existence of normalizable masslessstates in the continuum limit K -> infinity, and therefore the absence of amass gap. The low energy spectrum is dominated by string-like (or many parton)states. Our results are consistent with the claim that the theory is in ascreening phase.Comment: LaTeX, 20 pages. One Encapsulated PostScript Figur

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

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DLCQ bound states ofN=(2,2)super-Yang-Mills theory at finite and largeN